[asterisk-users] Sangoma or digium ?

[Steve Totaro]

Leon de Rooij wrote:
> Hi all,
>
> We need to get better echo cancellation on an Asterisk gateway.
>
> Currently it has two TE410P (1st gen) cards. So would it be possible to
> just buy two VPM450M cards ? Or do we need to buy two new TE412P cards ?
> In that case a Sangoma A108d card would be nice as well ?
>
> What configuration gives the best audio quality ?
>
> Thanks,
>
> Leon de Rooij
> leon at scarlet-internet.nl
>   

I have rarely if ever seen echo in non POTS TDM (ISDN) lines that was so 
bad that it could not be addressed with software EC. 

Maybe if you describe the "gateway" and how it functions, plus the 
phones you are using, you may not have to buy or replace anything. 

What are your echo can settings?  What method of EC are you using? 

Have you tried working with Digium's support on this issue?

Thanks,
Steve Totaro